l = [1, 2, 3]
t = (1, 2, 3)
d = {'a': 1, 'b': 2, 'c': 3}
s = {1, 2, 3}
st = "acd"

len(st)
min(l)
max(d)

print("容器转列表：list(x)")
print("容器转元组：tuple(x)")
print("容器转字符串：str(x)")
print("容器转集合：set(x)")
# 别的容器没有办法转字典

print("通用排序：sorted(x, reverse=False)")

print(sorted(d, reverse=True))

# 字符串大小比较，按ascii码一位一位比较
s1 = "abc"
s2 = "acb"
print(s2 > s1)

